(Reuters) - Boies Schiller Flexner on Friday elected three new co-managing partners – Sigrid McCawley, Matthew Schwartz and Alan Vickery – and two new executive committee members, marking the latest steps in a leadership transition that has coincided with a mass exodus of attorneys from the prominent litigation firm.

The firm also said Friday that London-based Natasha Harrison, who became Boies Schiller's co-managing partner in December 2019, will now serve as deputy chairwoman, making her heir-apparent to its founder and chairman, famed trial lawyer David Boies.

The promotions come just over a week after Nick Gravante, who last year was elected as co-managing partner alongside Harrison, announced he's leaving for Cadwalader, Wickersham & Taft. About 60 partners have left Boies Schiller this year, opening spots on its leadership teams and keeping the firm's management in the spotlight.

The new co-managing partners, McCawley, Schwartz and Vickery, were already members of its executive team.

McCawley, based in Florida, has been at Boies Schiller for 20 years. She has recently represented women who say they are sex abuse victims of the late disgraced financier Jeffrey Epstein.

New York-based Vickery has been at Boies Schiller for more than 20 years, according to his LinkedIn profile, with clients including the New York Yankees, YES Network, NASCAR and insurance industry companies.

Schwartz, also in New York, joined Boies Schiller in 2015 after working as a Manhattan federal prosecutor. His practice focuses on government and internal investigations, white collar defense, regulatory compliance, and complex civil litigation.

Joining them on Boies Schiller's executive team are Washington D.C.-based partner Hamish Hume and New York-based partner Joanna Wright.

David Boies founded the firm in 1997, the same year he was hired by the U.S. government in antitrust litigation against Microsoft Corp, boosting his and his firm's reputation as a litigation powerhouse. He later represented Vice President Al Gore in the U.S. Supreme Court battle over the 2000 presidential election recount.

Boies Schiller has for years been among the most profitable U.S. law firms, with partners commonly earning seven-figure compensation, according to data from The American Lawyer.

But the flood of rainmaker partners from the firm, as well as its decision in April to seek a $10 million federal bailout loan intended to keep small businesses afloat amid the coronavirus pandemic, have prompted questions over the health of its finances and culture.

Boies, 79, has said in a raft of media interviews in the last week that the firm is stable and that the turnover is a natural part of its leadership transition.

UPDATE: This story has been updated to report that Sigrid McCawley has been at Boies Schiller for 20 years, according to a firm representative. A previous version of this story said she has worked at the firm for more than 14 years, citing her LinkedIn profile.